Carlson, T.N., and J.M. Prospero.
  <b>The Large-Scale Movement of Saharan Air Outbreaks over the
  Northern Equatorial Atlantic</b>.
  <i>J. Appl. Meteor.</i>, 1972.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/CARLSON-1972-LSM.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/CARLSON-1972-LSM.bib">(bibtex:
  CARLSON-1972-LSM)</A>.<br />